1990900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{463}}^1$

素因数の和:520

約数の個数: 36

約数和(自身を含む): 4430272

約数和(自身を除く): 2439372

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 463, 860, 926, 1075, 1852, 2150, 2315, 4300, 4630, 9260, 11575, 19909, 23150, 39818, 46300, 79636, 99545, 199090, 398180, 497725, 995450, 1990900]

約数ペア:

[(1, 1990900), (2, 995450), (4, 497725), (5, 398180), (10, 199090), (20, 99545), (25, 79636), (43, 46300), (50, 39818), (86, 23150), (100, 19909), (172, 11575), (215, 9260), (430, 4630), (463, 4300), (860, 2315), (926, 2150), (1075, 1852)]